JPS5497686A - Porous multi-ply calcined material of polytetrafluoroethylene and its production - Google Patents
Porous multi-ply calcined material of polytetrafluoroethylene and its productionInfo
- Publication number
- JPS5497686A JPS5497686A JP506978A JP506978A JPS5497686A JP S5497686 A JPS5497686 A JP S5497686A JP 506978 A JP506978 A JP 506978A JP 506978 A JP506978 A JP 506978A JP S5497686 A JPS5497686 A JP S5497686A
- Authority
- JP
- Japan
- Prior art keywords
- sheets
- ply
- polytetrafluoroethylene
- calcined material
- calcined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To obtain the title calcined material suitable for filters, electrolysis diaphragms, electric wire coating compounds, etc., having a uniform pore size distribution and improved strength, permeability, and flexbility, by calcining polytetrafluoroethylene multi-ply sheets previously orientated.
CONSTITUTION: 100 parts by volume of polytetrafluoroethylene (PTFE) powder is blended with 15W30 parts by volume of a liquid lubicant, e.g., to toluene, and then extruded or calendered to form sheets. After the lubricant is removed from the sheets by extraction, etc., the sheets are stretched by rolls or a tenter. The stretched PTFE porous sheets are piled to prepare multi-ply sheets, which are uniformly brought into contact with adjoining sheets and calcined at not lower than 327°C to give the desired porous multi-ply calcined material.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP506978A JPS5497686A (en) | 1978-01-19 | 1978-01-19 | Porous multi-ply calcined material of polytetrafluoroethylene and its production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP506978A JPS5497686A (en) | 1978-01-19 | 1978-01-19 | Porous multi-ply calcined material of polytetrafluoroethylene and its production |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5497686A true JPS5497686A (en) | 1979-08-01 |
Family
ID=11601088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP506978A Pending JPS5497686A (en) | 1978-01-19 | 1978-01-19 | Porous multi-ply calcined material of polytetrafluoroethylene and its production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5497686A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57131236A (en) * | 1980-11-06 | 1982-08-14 | Gore & Ass | Multi-component porous high strength ptfe products and manufacture |
US4478665A (en) * | 1980-11-06 | 1984-10-23 | W. L. Gore & Associates, Inc. | Method for manufacturing highly porous, high strength PTFE articles |
US5217666A (en) * | 1991-05-29 | 1993-06-08 | Daikin Industries Ltd. | Process for producing porous polytetrafluoroethylene film |
WO1996004133A1 (en) * | 1994-08-03 | 1996-02-15 | Textiles Coated Incorporated | Polytetrafluoroethylene laminate and method of producing same |
JP2009044731A (en) * | 2007-07-18 | 2009-02-26 | Nitto Denko Corp | Water-proof sound-transmitting membrane, method for production of water-proof sound-transmitting membrane, and electrical appliance using the membrane |
JP2010241047A (en) * | 2009-04-08 | 2010-10-28 | Nitto Denko Corp | Waterproof sound-transmitting film, and waterproof sound-transmitting member and electric appliance using the same |
JP2011003358A (en) * | 2009-06-17 | 2011-01-06 | Toyota Motor Corp | Method of manufacturing porous membrane for fuel-cell electrolyte membrane |
JP2011212604A (en) * | 2010-03-31 | 2011-10-27 | Fujifilm Corp | Crystalline polymer microporous membrane, method for producing the same, and filtration filter using the same |
US8272517B2 (en) | 2009-01-21 | 2012-09-25 | Nitto Denko Corporation | Water-proof sound-transmitting membrane, method for producing the water-proof sound-transmitting membrane, and electrical appliance including the water-proof sound-transmitting membrane |
CN105983352A (en) * | 2015-02-16 | 2016-10-05 | 上海灵氟隆新材料科技有限公司 | High-flux thick polytetrafluoroethylene film and preparation method thereof |
-
1978
- 1978-01-19 JP JP506978A patent/JPS5497686A/en active Pending
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57131236A (en) * | 1980-11-06 | 1982-08-14 | Gore & Ass | Multi-component porous high strength ptfe products and manufacture |
US4478665A (en) * | 1980-11-06 | 1984-10-23 | W. L. Gore & Associates, Inc. | Method for manufacturing highly porous, high strength PTFE articles |
JPH0258291B2 (en) * | 1980-11-06 | 1990-12-07 | Daburyu Eru Goa Ando Asosheetsu Inc | |
JPH06298978A (en) * | 1980-11-06 | 1994-10-25 | W L Gore & Assoc Inc | Porous highly strong ptfe multilayer article |
US5217666A (en) * | 1991-05-29 | 1993-06-08 | Daikin Industries Ltd. | Process for producing porous polytetrafluoroethylene film |
WO1996004133A1 (en) * | 1994-08-03 | 1996-02-15 | Textiles Coated Incorporated | Polytetrafluoroethylene laminate and method of producing same |
EP2174778A4 (en) * | 2007-07-18 | 2012-11-21 | Nitto Denko Corp | Water-proof sound-transmitting membrane, method for production of water-proof sound-transmitting membrane, and electrical appliance using the membrane |
EP2174778A1 (en) * | 2007-07-18 | 2010-04-14 | Nitto Denko Corporation | Water-proof sound-transmitting membrane, method for production of water-proof sound-transmitting membrane, and electrical appliance using the membrane |
JP2009044731A (en) * | 2007-07-18 | 2009-02-26 | Nitto Denko Corp | Water-proof sound-transmitting membrane, method for production of water-proof sound-transmitting membrane, and electrical appliance using the membrane |
US20130099411A1 (en) * | 2007-07-18 | 2013-04-25 | Nitto Denko Corporation | Water-proof sound-transmitting membrane, method for producing water-proof sound-transmitting membrane, and electrical appliance using the membrane |
US8663530B2 (en) | 2007-07-18 | 2014-03-04 | Nitto Denko Corporation | Water-proof sound-transmitting membrane, method for producing water-proof sound-transmitting membrane, and electrical appliance using the membrane |
US8695812B2 (en) | 2007-07-18 | 2014-04-15 | Nitto Denko Corporation | Water-proof sound-transmitting membrane, method for producing water-proof sound-transmitting membrane, and electrical appliance using the membrane |
US8272517B2 (en) | 2009-01-21 | 2012-09-25 | Nitto Denko Corporation | Water-proof sound-transmitting membrane, method for producing the water-proof sound-transmitting membrane, and electrical appliance including the water-proof sound-transmitting membrane |
JP2010241047A (en) * | 2009-04-08 | 2010-10-28 | Nitto Denko Corp | Waterproof sound-transmitting film, and waterproof sound-transmitting member and electric appliance using the same |
JP2011003358A (en) * | 2009-06-17 | 2011-01-06 | Toyota Motor Corp | Method of manufacturing porous membrane for fuel-cell electrolyte membrane |
JP2011212604A (en) * | 2010-03-31 | 2011-10-27 | Fujifilm Corp | Crystalline polymer microporous membrane, method for producing the same, and filtration filter using the same |
CN105983352A (en) * | 2015-02-16 | 2016-10-05 | 上海灵氟隆新材料科技有限公司 | High-flux thick polytetrafluoroethylene film and preparation method thereof |
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